Ionization-Excitation of helium-like ions by high-energy electrons
- Authors: Mikhailov A.I.1, Nefiodov A.V.1
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Affiliations:
- Petersburg Nuclear Physics Institute
- Issue: Vol 80, No 4 (2017)
- Pages: 605-613
- Section: Nuclei
- URL: https://journal-vniispk.ru/1063-7788/article/view/192090
- DOI: https://doi.org/10.1134/S1063778817030206
- ID: 192090
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Abstract
The differential and total cross sections are calculated for the ionization of helium-like ions that is accompanied by the excitation of residual ions to ns states owing to an electron impact. Nonrelativistic perturbation theory in electron–electron interaction with Coulomb functions used for a zero-order approximation underlies these calculations. The expressions obtained in this way have a universal character. They are applicable at moderate values of the target charge number Z and high energies of incident electrons. A comparison with total cross sections calculated for the helium atom within various theoretical approaches is performed.
About the authors
A. I. Mikhailov
Petersburg Nuclear Physics Institute
Email: anef@thd.pnpi.spb.ru
Russian Federation, Gatchina, 188300
A. V. Nefiodov
Petersburg Nuclear Physics Institute
Author for correspondence.
Email: anef@thd.pnpi.spb.ru
Russian Federation, Gatchina, 188300
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